1123121001019 has 2 divisors, whose sum is σ = 1123121001020. Its totient is φ = 1123121001018.

The previous prime is 1123121000983. The next prime is 1123121001043. The reversal of 1123121001019 is 9101001213211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123121001019 - 2¹¹ = 1123120998971 is a prime.

It is a super-2 number, since 2×1123121001019² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1123121041019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561560500509 + 561560500510.

It is an arithmetic number, because the mean of its divisors is an integer number (561560500510).

Almost surely, 2^{1123121001019} is an apocalyptic number.

1123121001019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123121001019 is an equidigital number, since it uses as much as digits as its factorization.

1123121001019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 1123121001019 in words is "one trillion, one hundred twenty-three billion, one hundred twenty-one million, one thousand, nineteen".